 Instant Segmentation is Object Detection with Semantic Segmentation. Mast RCNN is an architecture to achieve Instance Segmentation. It combines faster RCNNs with fully convolution networks, FCNs. Mast RCNN uses RY-Align, which preserves the spatial orientation of features and leads to no loss of information. And there's that, the new Mast RCNN for Instant Segmentation. I'll leave a link to the main paper, their code, and links to other cool blog posts and papers in the description down below.